SUSE-SU-2025:02229-1: important: Security update for libssh

Fri Jul 4 20:30:13 UTC 2025

# Security update for libssh

Announcement ID: SUSE-SU-2025:02229-1  
Release Date: 2025-07-04T16:02:38Z  
Rating: important  
References:

  * bsc#1245309
  * bsc#1245310
  * bsc#1245311
  * bsc#1245314

Cross-References:

  * CVE-2025-4877
  * CVE-2025-4878
  * CVE-2025-5318
  * CVE-2025-5372

CVSS scores:

  * CVE-2025-4877 ( SUSE ):  2.0
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-4877 ( SUSE ):  4.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-4878 ( SUSE ):  2.0
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-4878 ( SUSE ):  3.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-5318 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-5318 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-5318 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-5372 ( SUSE ):  7.6
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-5372 ( SUSE ):  7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
  * CVE-2025-5372 ( NVD ):  5.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Products:

  * Basesystem Module 15-SP6
  * Basesystem Module 15-SP7
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves four vulnerabilities can now be installed.

## Description:

This update for libssh fixes the following issues:

  * CVE-2025-5318: Fixed likely read beyond bounds in sftp server handle
    management (bsc#1245311).
  * CVE-2025-4877: Fixed write beyond bounds in binary to base64 conversion
    functions (bsc#1245309).
  * CVE-2025-4878: Fixed use of uninitialized variable in privatekey_from_file()
    (bsc#1245310).
  * CVE-2025-5372: Fixed cases where ssh_kdf() returns a success code on certain
    failures (bsc#1245314).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2025-2229=1 openSUSE-SLE-15.6-2025-2229=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-2229=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2025-2229=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * libssh4-0.9.8-150600.11.3.1
    * libssh-debugsource-0.9.8-150600.11.3.1
    * libssh-devel-0.9.8-150600.11.3.1
    * libssh4-debuginfo-0.9.8-150600.11.3.1
    * libssh-config-0.9.8-150600.11.3.1
  * openSUSE Leap 15.6 (x86_64)
    * libssh4-32bit-0.9.8-150600.11.3.1
    * libssh4-32bit-debuginfo-0.9.8-150600.11.3.1
  * openSUSE Leap 15.6 (aarch64_ilp32)
    * libssh4-64bit-0.9.8-150600.11.3.1
    * libssh4-64bit-debuginfo-0.9.8-150600.11.3.1
  * Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * libssh4-0.9.8-150600.11.3.1
    * libssh-debugsource-0.9.8-150600.11.3.1
    * libssh-devel-0.9.8-150600.11.3.1
    * libssh4-debuginfo-0.9.8-150600.11.3.1
    * libssh-config-0.9.8-150600.11.3.1
  * Basesystem Module 15-SP6 (x86_64)
    * libssh4-32bit-0.9.8-150600.11.3.1
    * libssh4-32bit-debuginfo-0.9.8-150600.11.3.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libssh4-0.9.8-150600.11.3.1
    * libssh-debugsource-0.9.8-150600.11.3.1
    * libssh-devel-0.9.8-150600.11.3.1
    * libssh4-debuginfo-0.9.8-150600.11.3.1
    * libssh-config-0.9.8-150600.11.3.1
  * Basesystem Module 15-SP7 (x86_64)
    * libssh4-32bit-0.9.8-150600.11.3.1
    * libssh4-32bit-debuginfo-0.9.8-150600.11.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-4877.html
  * https://www.suse.com/security/cve/CVE-2025-4878.html
  * https://www.suse.com/security/cve/CVE-2025-5318.html
  * https://www.suse.com/security/cve/CVE-2025-5372.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1245309
  * https://bugzilla.suse.com/show_bug.cgi?id=1245310
  * https://bugzilla.suse.com/show_bug.cgi?id=1245311
  * https://bugzilla.suse.com/show_bug.cgi?id=1245314

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